Roller for crushing ore or other material



(No Model.)

T .-A. EDISON. ROLLERS FOR CRUSHING ORE OR OTHER MATERIAL.

No. 498,385. Y Patented May 30, 1893.

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UNITE STATES PATENT OFFICE.

THOMAS A. EDISON, OF LLEWELLYN PARK, NEW JERSEY.

ROLLER FOR CRUSHING ORE OR OTHER MATE Rl AL.

SPECIFICATION forming part of Letters Patent No; 498,385, dated May 30,1893.

Application filed October 1, 1891. Serial No. 407,454- (lIo model.)

To all whom it may concern:

Be it known that I, THOMAS A. EDISON, a

citizen of the United States, residing at Llewellyn Park, in the countyof Essex and State of New Jersey, have inventeda certain new and usefulImprovement in Rollers for Crush ing Ore or other Material, (Case No.933,) of which the following isa specification.

The present invention relates to rollers especially adapted for crushingiron ore, although the mechanism may be applied to other uses. It isusual in ore crushing machines employing rollers to mountthem in pairson suitable supporting frames and to provide means for driving eachpair, and for feeding material to be crushed separately to each pair ofrollers and to provide separate means for pressing the rollers of eachpair together. In the machine to be described, I employ three or morerollers supported side by side in a frame and movable toward or awayfrom each other, instead of using them in pairs, and a single weight andlover serves to press all of said rollers together. Above the rollers isa supply tank with delivery chutes, feed rolls, and means for adjustingthe devices, so that the ore will always be fed to the rollers at theproper point.

The accompanying drawing is a side elevation of the apparatus.

1, 1 are heavy castings adapted to stand on a suitable foundation, andhaving openings or slots 2 extending nearly the whole length of thecastings. In these slots are blocks 3, capable of moving longitudinally,and forming bearings for the crushing rollers 4, 5, 6.

7 is a roller with a stationary bearing 8, and to this roller a drivingbelt 9, or other suitable driving mechanism, is connected.

The rollers 4, 5, 6 may be driven from roller 7 or in any suitablemanner.

10 is a cross-bar having arms 11 which rest against the bearings 3 atthe two opposite ends of the roller 4.

2 is a weight which through a suitable lever or levers presses said armsagainst the bearings and strongly forces all of the rolls together. Thelever preferably bears against the cross-bar at its center, the pressurebeing evenly distributed between the two ends of the rollers.

13 is a receptacle containing the ore or ma: terial to be crushed. 14are outlets therefor,

and '15 are adjustable chutes belowthe outlet. At the mouth of eachchute is a feed roller 16, driven by a belt 17 or by other suitablemeans. The several chutes and feed rollers'are so adjusted that the orewillfallbetween the rollers 4 5, 5 6, and 67. When the rollers wear awayby continued use, and are moved along towardthe right, thereby movingthem from a central positionunder the chutes 15, the latter-may be movedalong a crushed between all of the adjacent rollers.

simultaneously, substantially as described.

2. The combination, in a machine for crushing ore, &c., of anintermediate roller and two outer rollers in cooperative relationtherewith simultaneously, whereby three rollers serve in place of twopairs of rollers, and a single means for pressing all of said rollerstogether, substantially as described.

3. The combination of several rollers side by side, some of said rollersbeing bodily movable, suitable chutes or devices for feeding material tothe rollers, there being a chute for each two adjacent rollers, saidchutes or devices being adjustable, whereby the material may alwaysbefed to the rollers at the proper point, substantially as described.

This specification signed and witnessed this 28th day of August, 1891.

THOS. A. EDISON.-

Witnesses:

CHARLES M. CATLIN, JOHN F. RANDOLPH.

